Abstract: Transition printed circuit boards and edge contact wafers are positioned back-to-back and disposed within slots of a diecast aluminum shell with which they are held in place by means of an outer housing. High-speed electrical cable is attached to conductive patterns on the transition printed circuit boards using flux-free methods. The resultant cable and connector are capable of high-speed operation (greater than 100 megahertz) and are still, nonetheless, capable of providing high-density connections to connectors on boards immediately adjacent to semiconductor chips.